Nebius Group N.V.
DE ˙ DB ˙ NL0009805522
224,95 € ↑9,95 (4,63%)
2026-06-04
DEL PRIS
SecurityDE:YDX / Nebius Group N.V.
InstitutionHarbor Advisors LLC
Latest Disclosed Ownership27,600 shares
Latest Disclosed Value $ 2,863,776
Harbor Advisors LLC ownership in YDX / Nebius Group N.V.

On May 7, 2026 - Harbor Advisors LLC filed a 13F-HR form disclosing ownership of 27,600 shares of Nebius Group N.V. (DE:YDX) valued at $2,470,200 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 27,600 shares of Nebius Group N.V.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $6,208,620 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 27,600 0 0.00 2,864 23.94 0.4137
2026-01-30 2025-12-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 27,600 0 0.00 2,310 -25.44 0.3470
2025-11-12 2025-09-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 27,600 100 0.36 3,099 103.68 0.4779
2025-08-13 2025-06-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 27,500 0 0.00 1,522 162.24 0.2490
2025-05-15 2025-03-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 27,500 10,000 57.14 581 19.83 0.1008
2025-02-11 2024-12-31 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 17,500 0 0.00 485 46.22 0.0762
2024-11-14 2024-09-30 13F NEBIUS GROUP N.V. SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0555
2024-07-30 2024-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0608
2024-05-01 2024-03-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0609
2024-02-01 2023-12-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0634
2023-11-07 2023-09-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0710
2023-08-15 2023-06-30 13F/A-1 YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0704
2023-08-01 2023-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 331
2023-05-11 2023-03-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0776
2023-02-13 2022-12-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0827
2022-11-07 2022-09-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0891
2022-08-05 2022-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 0.00 0.0804
2022-05-16 2022-03-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 331 -68.74 0.0679
2022-02-14 2021-12-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 1,059 -24.09 0.1970
2021-10-29 2021-09-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 1,395 12.68 0.2790
2021-08-03 2021-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 1,238 10.44 0.2448
2021-05-04 2021-03-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 1,121 -7.96 0.2485
2021-02-11 2020-12-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 1,218 6.65 0.2727
2020-11-09 2020-09-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 1,142 30.51 0.2684
2020-08-03 2020-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 875 46.81 0.2243
2020-05-21 2020-03-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 596 -21.68 0.1809
2020-02-13 2019-12-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 761 24.14 0.2062
2019-11-13 2019-09-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 613 -7.82 0.1754
2019-08-14 2019-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 665 10.65 0.1988
2019-05-15 2019-03-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 601 25.47 0.1937
2019-02-15 2018-12-31 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 479 -16.84 0.1863
2018-11-14 2018-09-30 13F YANDEX N V SHS CLASS A N97284108 17,500 0 0.00 576 -8.28 0.1789
2018-08-07 2018-06-30 13F YANDEX N V SHS CLASS A N97284108 17,500 7,500 75.00 628 58.99 0.2022
2018-05-11 2018-03-31 13F YANDEX N V SHS CLASS A N97284108 10,000 0 0.00 395 20.43 0.1330
2018-02-07 2017-12-31 13F YANDEX N V SHS CLASS A N97284108 10,000 0 0.00 328 -0.61 0.1114
2017-10-26 2017-09-30 13F YANDEX N V SHS CLASS A N97284108 10,000 0 0.00 330 25.95 0.1208
2017-08-14 2017-06-30 13F YANDEX N V SHS CLASS A N97284108 10,000 0 0.00 262 19.63 0.1036
2017-05-15 2017-03-31 13F YANDEX N V SHS CLASS A N97284108 10,000 10,000 219 0.0932
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.